| 摘要 |
PROBLEM TO BE SOLVED: To provide thermal recording material reduced in background fog, excellent in recording sensitivity and forming a recording image excellent in heat resistance, light fastness and water resistance. SOLUTION: In a thermal recording material having a recording layer containing a leuco dye and a coupler, 2,4-dihydroxydiphenyl sulfone and 2-(2'- hydroxy-5'-methylphenyl)benzotriazole are added to the recording layer and, further, at least 1,1,3-tris(2-methyl-4-hydroxy-5-cyclohexylphenyl)butane or 1-[α- methyl-α-(p-hydroxyphenyl)ethyl]-4-[α',α-bis(p-hydroxyphenyl)ethyl]benzene is added thereto. |
